(1R,2R,6S,7S,8R,11S,15S)-2,7,11-trihydroxy-2,6,8,10,10-pentamethyl-15-((E)-1-(2-methylthiazol-4-yl)prop-1-en-2-yl)-17-oxa-14-azabicyclo[11.3.1]heptadec-13-en-9-one